/*
 * Licensed to the Apache Software Foundation (ASF) under one
 * or more contributor license agreements.  See the NOTICE file
 * distributed with this work for additional information
 * regarding copyright ownership.  The ASF licenses this file
 * to you under the Apache License, Version 2.0 (the
 * "License"); you may not use this file except in compliance
 * with the License.  You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

package org.apache.jena.rdf.model.test;

import java.util.ArrayList;
import java.util.Arrays;
import java.util.List;

import org.junit.Assert;

import org.apache.jena.atlas.iterator.Iter;
import org.apache.jena.rdf.model.Model;
import org.apache.jena.rdf.model.ModelChangedListener;
import org.apache.jena.rdf.model.Statement;
import org.apache.jena.rdf.model.StmtIterator;

public class RecordingModelListener implements ModelChangedListener {
    List<Object> history = new ArrayList<>();

    @Override
    public void addedStatement(Statement s) {
        record("add", s);
    }

    @Override
    public void addedStatements(Statement[] statements) {
        record("add[]", Arrays.asList(statements));
    }

    @Override
    public void addedStatements(List<Statement> statements) {
        record("addList", statements);
    }

    @Override
    public void addedStatements(StmtIterator statements) {
        record("addIterator", Iter.toList(statements));
    }

    @Override
    public void addedStatements(Model m) {
        record("addModel", m);
    }

    @Override
    public void removedStatements(Statement[] statements) {
        record("remove[]", Arrays.asList(statements));
    }

    @Override
    public void removedStatement(Statement s) {
        record("remove", s);
    }

    @Override
    public void removedStatements(List<Statement> statements) {
        record("removeList", statements);
    }

    @Override
    public void removedStatements(StmtIterator statements) {
        record("removeIterator", Iter.toList(statements));
    }

    @Override
    public void removedStatements(Model m) {
        record("removeModel", m);
    }

    @Override
    public void notifyEvent(Model m, Object event) {
        record("someEvent", m, event);
    }

    protected void record(String tag, Object x, Object y) {
        history.add(tag);
        history.add(x);
        history.add(y);
    }

    protected void record(String tag, Object info) {
        history.add(tag);
        history.add(info);
    }

    public boolean has(Object[] things) {
        return history.equals(Arrays.asList(things));
    }

    public void assertHas(Object[] things) {
        if ( has(things) == false )
            Assert.fail("expected " + Arrays.asList(things) + " but got " + history);
    }

    public boolean has(List<? > things) {
        return history.equals(things);
    }

    public boolean hasStart(List<Object> L) {
        return L.size() <= history.size() && L.equals(history.subList(0, L.size()));
    }

    public boolean hasEnd(List<Object> L) {
        return L.size() <= history.size() && L.equals(history.subList(history.size() - L.size(), history.size()));
    }

    public void assertHas(List<? > things) {
        if ( has(things) == false )
            Assert.fail("expected " + things + " but got " + history);
    }

    public void assertHasStart(Object[] start) {
        List<Object> L = Arrays.asList(start);
        if ( hasStart(L) == false )
            Assert.fail("expected " + L + " at the beginning of " + history);
    }

    public void assertHasEnd(Object[] end) {
        List<Object> L = Arrays.asList(end);
        if ( hasEnd(L) == false )
            Assert.fail("expected " + L + " at the end of " + history);
    }

    public void clear() {
        history.clear();
    }

}
